Determine the pH of the following solution. Initial concentrations are given. [HC₂H₃O₂] = 0.250 M, [HCl] = 0.120 M [Ka = 1.8 × 10^-5] A) 0.60 B) 0.92 C) 0.43 D) 4.74 E) 13.08

Question

Quizplus · Accepted Answer

The pH is primarily determined by the strong acid HCl, which fully dissociates. The concentration of H⁺ from HCl is 0.120 M, so pH = -log(0.120) ≈ 0.92. The weak acid HC₂H₃O₂ contributes negligibly to the H⁺ concentration.

Determine the PH of the Following Solution